* Photosynthesis: Plants, algae, and some bacteria use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen. This process stores energy from the sun in the chemical bonds of glucose.
* Cellular Respiration: All living organisms, including plants and animals, use glucose as fuel to power their cellular activities. This process releases the stored energy from glucose and converts it into a usable form (ATP).
Therefore, the sun's energy is captured through photosynthesis and ultimately powers all life on Earth.